Indicator for rotary snap-switches.



PATENTED NOV. 24, 1903.

. M. GUETT. v INDICATOR FOR ROTARY SNAP SWITCHES.

APPLICATION FILED AUG. 28, 1903.

N0 MODEL.

ms NORRIS PETERS co. wow-mac. WASWNETON n 4;.

UNITED STATES fatented November 24, 1903.

MONROE GUETT, OF HARTFORD, CONNECTICUT, ASSIGNOR TO THE HART HEGEMAN MANUFACTURING COMPANY, OF HARTFORD, CONNECTICUT,

A CORPORATION OF CONNECTICUT.

INDICATOR FOR ROTARY SNAP-SWITCHES.

' SPECIFICATION forming part of Letters Patent No. 745,010, dated November 24, 1903.

Application filed August 28, 1903. Serial No. 171,057. (No modeL) .To all whom it may concern.-

Be it known that I, MONROE GUETT, a citizen of the United States, residing at Hartford, in the county of Hartford and State of Connecticut, have invented certain new and useful Improvements in Indicators for Rotary Snap-Switches, of which the following is a specification. p

This invention relates to a means for indi- [O eating the off and on positions of the poles of a rotary snap electrical switch.

The object of the invention is to provide a construction which is simple, effective, always is ready for use, and which does not interfere in any way with the attachment of the switch to its support or the connection of the wires with the binding-posts.

The embodiment of this invention has an indicating-dial bearing the words Off and On rotarily supported by the cover or an equivalent bridge over the mechanism and provided with lugs which when the cover is in place on the switch extend into notches in the head of the pole-sleeve.

2 5 Figure 1 of the accompanying drawings shows a plan of a switch provided with the indicating means. Fig. 2 shows a view of the inside of the cover and the back of the dial. Fig. 3 shows a plan of the pole-sleeve; and

Fig. 4 shows a sectional view of the cover and the dial, also a part of the pole-sleeve.

The pole-sleeve 1, with the pole-plate 2, is constructed and attached to the throwing mechanism in any common manner. The

head 3 of the pole-sleeve has notches 4 in its upper face. I

The cover 5 may be formed of metal or any other material in any common design. The cover shown is formed of metal and provided 0 with an insulating-lining 6.

In the central opening in the cover is a bushing 7. Before this bushing is inserted into the opening a dial 8, having the words On and Oif printed, painted, or stamped on its upper face, and aplate 9, attached to the dial and having downwardly-extending lugs 10, is placed on the bushing above the flange at the lower end. Awasher 11 is also placed on the bushing above the shoulder,

5p and the bushing is then thrust through the opening and the upper end spun over to hold it in position. WVhen the bushing is fastened in place, the dial and the attached plate, with its lugs, are free to be rotated, so as to bring the lettering beneath the opening 12 in the cover. The washer 11 strengthens the cover around the opening and holds the dial a slight distance away from the lining. When this cover is put on the switch, the lugs that project from the plate fastened to the under side of the dial extend into the notches in the head of the pole-sleeve, so that the rotation of the pole-sleeve causes a rotation of the dial. If the dial is not in such position that the lugs extend into the notches when the cover is first placed on the switch, the rotation of the pole-plate will cause the notches to pick up the lugs as they rotate and then carry the dial around into correct position.

Then the cover is taken off, the dial rc- 7o mains in it, and when the cover is returned the dial is in correct position for immediate connection. An indicator arranged in this manner cannot become lost, and it does not obstruct or interfere with the attachment of the switch to a support or the connection of the circuit-wires to the binding posts or the adjustment of the poles and contacts, if such is necessary at any time.

The invention claimed is 1. An indicator for an electric rotary snapswiteh consisting of a cover for the switch, a lettered dial movably attached to the cover, and means for connecting the dial with the pole-sleeve, substantially as specified.

2. In combination with the cover of an electric rotary snap-switch, a lettered dial movable inside of the cover, a bushing holding the dial to the cover, and lugs projecting downwardly from the dial, substantially as specio fied.

The combination with the pole-sleeve of an electric rotary snap-switch having notches in its upper end, of a cover with a dial movably supported by the cover and having lugs 5 extending into the notches in the upper end of the pole-sleeve, substantially as specified.

4. An electric rotary snap-switch having a pole-sleeve with notches in its upper end,

a cover fitting over the switch, a lettered dial movable inside of the cover, a bushing holding the dial to the cover, and means connecting the pole-sleeve and the dial so that the movement of the pole-sleeve moves the dial, substantially as specified.

5. A new article of manufacture consisting of a cup-shaped cover having a hole through its upper face, and a lettered dial inovably attached to its inner face.

MONROE GUETT.

Witnesses:

H. R. WILLIAMS, E. M. LOWE. 

